How can I get the transfer function?

Im not sure what I'm doing wrong. Im trying to get the TF.

clc

clear all

syms s

TF

G = (-3.2*s^2 - 2.9*s -0.025)/(((s+1.08)^2+2.1025)*((s+0.002)^2+0.0044) )

function[ans]=syms2tf(G)

[Num,Den]=numden(G)

TFnum=sum2poly(Num);

TFden=sym2poly(Den);

ans=tf(TFnum,TFden);

end

syms2tf(TF)

[Wn, Zeta, Poles]=damp(TF)

Answer 1

[Star Strider]

Using the Symbolic Math Toolbox is likely not appropriate here.

Try this instead —

s = tf('s');
G = (-3.2*s^2 - 2.9*s -0.025)/(((s+1.08)^2+2.1025)*((s+0.002)^2+0.0044) )

G =
 
              -3.2 s^2 - 2.9 s - 0.025
  ------------------------------------------------
  s^4 + 2.164 s^3 + 3.282 s^2 + 0.02259 s + 0.0144
 
Continuous-time transfer function.

figure
bode(G)
grid

figure
impulse(G)

.